We do
not have to assign the
name slot to every class where we want it to appear. Any subclass of a class automatically inherits all the slots of the superclass. For example, if you click on the
News_Service class, you can see that:
a) the
name slot has already been assigned to this class through inheritance
b) the slot icon is different than it was for
Author, i.e., the " inherited slot" icon

shows that the slot has been inherited
Note: In the Protege-Frames menu bar, click Help | Icons to see a list of all the icons in the Protege User Interface, along with textual descriptions of what the icons mean.
Classes with more than one superclass inherit the slots from both classes. For example, if you click on the
Editor class, you can see that it has inherited the
name slot from
Author, and the
salary slot from
Employee. This multiple inheritance is an essential part of Protege-Frames.